Lapping CPU

[bioevolve]

Back to the old lapping the CPU die, hahahaha
Wet sanded my XP1700 and XP1800 today with 1000 grit automotive sandpaper.

XP1700 went from 100f to 96f full load watercooled
XP1800 went from 102f to 99f full load aircooled

Room temp of 78f.

The water block and heatsink were already lapped from a previous lapping journey.

Getting those writings off the die helps in surface matting with your cooling devices.

bioevolve

 

[Yodums]

Man that's really crazy. You've got guts to lap an AMD core, as it being fragile. I really don't think it's worth it for 1 degree or so.

Yodums

 

[bioevolve]

hahaha

Well its more than 1 degree, as you can see it 3-4 degrees.

Sanding won't chip/crack the die. if you do it right.
Beside, you only have to apply light pressure and go in a circular motion, untill the letters come off the die.

When done, it will shine like a silver mirror.
Just make sure you wash it off with non-conductive electrowash then air-in-a-can dry it.

The Thunderbirds(sanded them too) were more fragile than the XP's.

bioevolve